Title :
Modes with kHz Scale Spacing in Raman Fibre Lasers with Ultra-Long Cavity
Author :
Karalekas, V. ; Babin, S.A. ; Harper, P. ; Podivilov, E.V. ; Mezentsev, V.K. ; Ania-Castañón, J.D. ; Turitsyn, S.K.
Author_Institution :
Aston Univ., Birmingham
Abstract :
In this paper we have experimentally demonstrated for the first time that the mode structure can be resolved up to the record laser cavity length of 84 km. Very narrow RF peaks reveal that the relative phase fluctuations between the neighbouring modes are very small even propagating through such a long span, but with increasing power they broaden significantly due to nonlinear interaction. Thus, our results prove the feasibility of a new class of lasers with ultra-long cavity.
Keywords :
Raman lasers; fibre lasers; laser cavity resonators; laser modes; Raman fibre laser mode; distance 84 km; nonlinear interaction; phase fluctuation; ultra-long laser cavity; Fiber lasers; Laser modes; Laser theory; Nonlinear optics; Optical attenuators; Optical refraction; Optical variables control; Radio frequency; Spectral analysis; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386159
